7 April 11:08
The Yenisei Basin Water Administration (EnBVU), in accordance with the order of the Federal Agency for Water Resources (Rosvodresursy), has established an operating mode for the Boguchanskaya HPP (part of the RusHydro Group) from April 4 to May 1 in the flow range of 2700-3200 cubic meters per second.
The decision was made taking into account the recommendations of the Interdepartmental Working Group and in accordance with the hydrological situation developing in the Angara-Yenisei cascade. The regime can be changed in accordance with the ice situation and the dynamics of inflow on Lake Baikal, the Angara and Yenisei rivers.
During March, the Boguchanskaya HPP operated in the range of 2900-3300 cubic meters per second, the actual average flow rate was 3213.8 cubic meters per second. The level of the Boguchansky reservoir dropped during March from 207.26 to 207.13 m (above the level of the Baltic Sea). By the end of the month, the ice thickness at the point of constant observation was 0.64 m, however, due to rising air temperatures, the opening along the concrete dam increased in width from 5-10 to 70 meters.
On the eve of the upcoming flood, which in the Lower Angara region begins in the first ten days of May, the free volume of the Boguchansky reservoir is about 2 cubic kilometers. According to Roshydromet, snow reserves in the basins of large tributaries of the Angara (Irkut, Kitoy and Belaya) exceed the norm by 15-30%. Experts note that intensive snowmelt has already begun in the regions of the Siberian Federal District, while precipitation in the form of snow and rain fell in Eastern Siberia at the end of March. In some areas of the Krasnoyarsk Territory on the Yenisei, flood levels are expected to be higher than normal.
The staff of the Boguchanskaya HPP continues the planned overhaul of hydraulic unit No. 4; in the first ten days of April, the planned maintenance of unit No. 8 will begin. By the beginning of the flood, all work will be completed, and during the critical period of the flood, all units of the station will be in operation or in reserve. This will allow you to immediately respond to changes in the situation in accordance with the requirements of the UniBVU.
The regimes for filling and draining reservoirs, and the passage of floods to hydroelectric power stations are established by the Federal Agency for Water Resources (Rosvodresursy), taking into account the recommendations of the Interdepartmental Working Group, which includes representatives of the Ministry of Emergency Situations of Russia, the Ministry of Agriculture of the Russian Federation, the Federal Agency for Fisheries, Rosmorrechflot, JSC SO UES, executive authorities of the constituent entities of the Federation, etc.
Information about the hydrological situation of hydroelectric power stations that are part of RusHydro is presented in the form of daily updated infographics.
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